EHang secures first test flight permit in the heart of Europe EHang secures first test fligh... The Civil Aviation Authority of Austria has issued a trial flight permit for the EHang 216 air taxi EHang EHang 2/2 The Civil Aviation Authority of Austria has issued a trial flight permit for the EHang 216 air taxi EHang Chinese air mobility company EHang is on a mission to get its autonomous air taxis into the air around the globe. After flying into Spain earlier this year, the air taxi firm has now been granted its first trial flight permit in the European Union – but it's not in Seville.